Shield for furnaces.



J. R. RISHEBEGAR.

SHIELD FOR FURNACES.

APPLICATION FILED mul. |918.

11,287,104. Patented D60. 1o, 1918.v

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l. R. RISHEBEGAR'.

SHIELD For: FunNAcEs. APPLICATION FILED APR. L?, |918.

l Patented Dec 10, 1918.

2 SHEETS-SHEET 2.

ATTORNEY JAMES R. EISHEBEGAE, E BnannooK, PENNSYLVANIA.

SHIELD Eon. EUENAcEs.

To all whom t may concern:

Be it known that I, JAMES R.v RISHEBEGAE, a citizen of the UnitedStates, residing at Braddock, in the county of Allegheny and State ofPennsylvania, have invented a new and useful Shield for Furnaces, ofwhich i the following is a specification.

This invention relates toshields for furnaces, andv its object is toprovide a shield which may be introduced into a furnace for protectingWorkmen in dismantling and making repairs to the furnace, without thenecessity vof cooling the furnace, whereby there isa material saving intime, and also preventing harm to workmen.

In accordance with the invention there is provided a supportingstructure which may be in the form of a beam capable of being clamped orwedged betweentwo buckstaves between which brickwork is to be taken downand built up, and associated with this beam are supports introducibleinto the furnace and held by the beam, while thek supports, in turn,carry a frame on which vare mounted slidable doors or shields soarranged as to be introduced into the furnace chamber and interposedbetween the interior of the furnace andworkmen taking down and buildinga wall, thus protecting the workmen from serious burns or other injuryand even from any marked discomfort.

The invention will be best. understood from a consideration of thefollowing detailedydescription taken in connection with the accompanyingdrawings forming part of this specification, with the understanding.however, that the invention is not confined to any strict conformitywith the showing of the drawings but may be changed and modified so longas such changes and modifications markno material departure from thesalient features of the Ainvention as eX- pressed in the appendedclaims.

In the drawings e v Y Figure l: is an elevationshowing a portion oftheouter wall of afurnace with the shield structure'in place. y Y I'Fig.' 2 isy a plan View of the mechanism shownin Fig. 1, but omittinganyshowing of the furnace itself.

Fig 3 is a section onV theline 3 3 of Fig. 1. Y

Fig. 41 is a section on the line L1*-41fof Fig. 2, but on a largerscale. l

Referring to the` drawings, there' 'is shown Y Specification' of LettersPatent.

Appneation mea April 17',

Patented Dec. 10,1918. i

1918. Serial No. 229,116.

afurnace 1 in the walls of which are buckstaves 2. No attemptis made toshow any particular form or construction of furnace and mention is madeof-,buckstayes only be cause these particular 'features of thefurnaceare utilized as a supporting means for a beam 3 which maybe anv ironorsteel structure of any suitable form, either such asV shown or of someother form. Ther respective ends of the beam carryrscrews 4 by means ofwhich the beam may be tightly clamped by two adjacent buckstaves 2 atany desired height above the floor leveLfkIt willcbe understood,however, that while the screws 4 provide a convenient means for thepurpose,other means may be employed for the saine purpose. o vNeartheends the beam 3 carries depend,- ing hooks 5 with hook ends 6directed one toward the other. There are also provided elongated bars 7,each witha longitudinal slot `-8,7through a portion ofits lengthfanolone end of each vbar 7 has yan extension 9 with a row of teeth 10therealong. k'These teeth are in the form of ratchet teeth. Pivotallymounted on ,the beam between pairs of Vears 11 are yokes l2, one neareach end of the bar. The yokes in theparticular structure shown arepivoted at their lclosed ends whileV their open ends are each connectedby a pin 13 held in place by'any suitable means, such as a. cotter pin14. Thev yokes 12 are in the nature of latches engagingsuitable ones ofthe teeth 10 thereby holding the bars 7 when mounted upon the hook ends6 of the pendant hooks 5,7so that the bars 7 are approximatelyhorizontal or in some other desired position. At the same i time byreleasing the bars 7 from the latches 12 these bars may be swung aboutthe `ends ofthe hooks 5 as pivots or mav be made to slide lengthwise' ofthe hooks for a purpose whichwill hereinafter appear.

At the end of they bar 7 remote from they extension 9 is a lug or block15 projecting from one face of the bar and this lug carries an`adjustable hook 16. e There is also provided a frame 17 which may [be'of rectangular outline somewhat longerthan wide but any particularshape is not obligatory, although an oblong rectangu- 1 lar frame is tobe preferred. This frame mayconveniently be made ofpipe and in suchVcase an opening 18 is made in the pipe .f

ata high` point so that the pipe maybe filled with Water. Near theendson those members of the frame which constitute-the top and bottom inthe installed position are hooks or guides 19 in which engage kedge ribsor strips 20 of shields 21, 22 respectively. Extending lengthwise of theframe about midway between the top and bottom members is a bar 23 vtraversing eyes 24 on the respective shields 21 and 22. These' eyes arearranged in pairs near those ends of the shields which meet whentheshields are brought together and the eyes of each pair are spacedapart a short distance to aid in supporting. the shields butnotinterfering with sliding of "the shields toward and from each otheralong the ymiddle guide bar 23, which latter, inthe installed position,is about horizontal. The eyes 24 and hooks y19 yprovide convenientguides for the shields, which latter areoffset frcinthe plane of theframe 17 so that they may' slide beyond the endbars thereof. The bottombarof the ,iframe 17 is provided with a series of hooks 25 from whichmay be hung a'curtain 26. 'The side bars'of the frame 1'7' are providedwith eyes27 in which the hooks 16 engage and thus ysupport the frame 17with the shields 21 and 22" in an approximately upright position in theordinary` installation.

Thebars '7' are long enough sothat with the beam 3 outsideof a wall of afurnace, the frame :17 may be tipped to an approximately horizontalposition when the bars "7 arepin a like position, `and be withdrawnfromthe furnace when, the front wall has reached about the height of thebars 7.

While the rwall is being torn down or built,Y

and especially inthe latter event, the shields act as a protection forthe workmen building theA wall so that the interiorheat of the furnacewill not directly reach them and the workmen are therefore protectedfrom injury orfeven ,from undue heat. It is not necessary that theflames within the furnace be put out, for, in the case of gas as a fuelA the flames may burn to an extent which may be less than theirifullvigor. In the case of repairs it is not necessar 7fto cool down the`furnace, which operation consumes considerable timel, and the loss ofmore time inreheating the furnace after repairs are made. When it isdesired to Work behind the buckstaves it is only necessary toslide theshields which maybe made long enough to permit such movement andprotectworkmenbuilding walls lbetween the buc'kstaves wherev they aretoo close together to install the beam v3.

The shield-s 2O and 2K1` are,.of course, made of sufficient-lyrefractory material to Withstand the heat to which theyare subjected andthe same is true of 'the curtain '26.

Vhat is yclaimed is 1 y l i A shield structure for protecting workmen inrepairing furnaces, comprising` a support adaptable to -extend into thefurnace,I

and a shield and carrier therefor adaptable to the support for locationwholly within the furnace.

2. A shield structure for protecting workmen in repairing furnaces,comprising a supporting member adaptable and provided with means forfastening it to the furnace walls Where the repair is to be made, and ashield and. carriertherefor adaptable to and upheld by the support withthe shield interior to the furnace walls and movable with relationftothe support for location wholly interior' to the wall of the furnace inwhich the repairs are to be made.

3. A shield structure for protecting Workmen'when repairing hotfurnaces, comprising a support adaptable to a furnace wall and extendingedge Walls of a breach made through the furnace wall, other supportscarried by the first named' support and movable thereon into the furnaceinterior to the breach, and a shield carried 'by the second namedsupports in pendant 'relation thereto when in 'the interior ofthefurnace.

4. A shield structure for protecting Workmen when repairing hotfurnaces, comprisingl a support adaptable to a furnace Wall andlextending between ,and 'clamped to the1 edge Walls of a breach madethrough the furnace wall, other supports carried by the first namedsupp-ort and movable thereon into the 'furnace interior to the breach,and a shield carried by the second named supports in pendant relationthereto when in the interior of thefurnace, said shield being movable toeither side of the breach.

' 5. A shield structure for protecting workmen when repairing hotfurnaces, comprising' a support adaptable to a furnace Wall andextending between and clamped tothe edge walls of a breach made 'throughthe furnacewall, other supports carried by the first named support andmovable thereon into the furnace interior lto the breach, yand theinterior of thevfurnace, said shield com-k prising slidable membersmovable to either or both sides of the edges of the breach.

6. A shield structure for protecting Workmen when repairing hotfurnaces, comprising a beam with clamping means at the ends for engagingadjacent4 buckstaves of .the furnace, bars supported by the beam andmovable transversely thereof, and shields in turn carried by the bars independing relation thereto and' located within the furnace back of theWall to bev repaired. y

7. A shield structure for protecting workmen when repairing hotfurnaces, comprising a beam with clamping means at the ends, said beambeing of a length to engage adliacentv buckstaves and be supportedthereby, bars extending transversely of the' beam between and clamped tothe l near the ends jthereof and movable in the the shield devicescarried by the inner ends of the bars.

' 8. A shield structure for protecting Workmen when repairing hotfurnaces, .comprising a beam with means for supporting it fromuprightmembers of the furnace, bars carried by vthebeam and' movable inthe direction of their -length transversely of the beam, said barshaving pivotal connections with the beam, meansforholdingthe bars insubstantially horizontal positions, a frame pendantly supported by theinner ends of the bars, andV shields carried by the frame. Y

9. A shield :structure for protecting workmen when repairing hotfurnaces, comprising al beam with means for supporting it from uprightmembers of the furnace, bars carried by thebeam and movable in the divrection of their length transversely of the beam, said bars havingpivotal connections with the beam, means for holding the bars insubstantially `:horizontal positions, a frame pendantly supported by theinner ends of the bars, and shields carried by the frame, saidfrainebein of hollow construction and havin-grmeans for introducingwater thereinto. t

10. A shield.. structure for protecting workmen whenrepairing hotfurnaces, comprising a supporting beam with means for clamping it toandV between spaced upright parts of the furnace, bars carried by androckable with relation to the beam and also slidable in the direction oftheir length into and out of thefrfurnace, and shield means carried bythe inner ends. of the bars.

11. A shieldA structure for protecting workmen whengrepairing hotfurnaces, comprising a supporting beam with means for clamping it toandl between spaced upright members of the furnace, bars carried by androckable withrelation to the beam and also slidable in the direction oftheir length into and out of the furnace, shield means carried by theinner ends of the bars, said shield means comprising a frame, and shielddevices mountedto slide along the frame toward each other and alsobeyond the ends of the frame.

12. A shield structure for protecting workmen when repairing hotfurnaces, comprising a supporting beam with means for clamping it to andbetween spaced upright parts ,of the furnace, bars carried by androckable with relation to the beam and also slidable in the direction oftheir length into and out of the furnace, shield means carried by theinner ends of the bars, said shield means comprising a frame and shieldvdevices mounted to slide along the frame toward each other and alsobeyond the ends of the frame, and said shield devices and frame havinglcoacting guiding ineans at the'` protecting and 'to constitute the mainsupport for the shieldstructure, supporting devices dependingfrom thebeam, bars each longitudinally n slotted Vwith the slot traversed by asupporting device lfromthe beam, whereby the bar maybe r`ocked`and movedin the direction of its length transversely of the length of vthebeaimand each bar having ratchet teeth at one end, latch for each barcarried by the beam `aldmovable into engagement with a ratchet tooth tosupport the beam in a substantially horizontal position and projectinginto the furnace, a frame carried by the inner ends of the bars in anupright position, andfshields carried by and slidable lengthwise of theframe toward each other and beyond: the ends of the frame.

14. A shield structure for protecting workmen when repairing hotfurnaces, comprising a beam of a length to extend and be clamped betweenspaced parts of a furnace and to constitute the main support for theshield structure, supporting devices depending from the beam, bars eachlongitudinally slotted with the slot traversed by a supporting devicefrom the beam, whereby the bar may be rocked and moved in the directionof its length transversely of the length of the beam, and each barhaving ratchet teeth at one end,` a latch for each bar carried by thebeam and movable into lengagement with a ratchet tooth to support thebeam in a substantially horizontal position and projecting intojthefurnace, a frame carried by the inner ends of the bars in an uprightposition, and shields carried by and slidable lengthwise of the frametoward each other and beyond the ends of the frame, said shields andframe having coacting guiding means at the top and bottom. c

15. A shield structure for protecting workmen when repairing hotfurnaces, comprising a beam of a length to extend and be clamped betweenspaced parts of a furnace and to constitute the main support for theshield structure, supporting devices depending from the beam, bars eachlongitudinally slottedk with the slot traversed by a supporting devicefrom the beam, whereby the bar may be rocked and moved in the directionof its length transversely of the length of the beam, and each barhaving ratchet teeth at one end, a latch for each bar carried by thebeam and movable into engagement with a ratchet tooth to support thebeam in a substantially horizontal position and projecting into thefurnace, a

fra-ine carried Vby "the-inner.ends,` of th'efbars in an uprightlposition,"and shields 'earried by `and slidable,lengthwise of the frame.toward each other and beyondthe ends ofthe frame, said frame and`shields having-coactingguiding-ineans at the top and bottom, the framevhaving an intermediate guide bar extending from end 1to end and theshields having ,gnlidngV eyestraversed ythe guilde bar With thevguiding,Keyes located, close to the meeting ledges of the shields.. A.

16. A shield structure lfor protecting workmen when repairing khotfurnaces, zcomprising a beam with means .for Clamping it Copies ,of this.patentmayve obtained for Yfive eents eachi. by'a'ddres-sng the;,Comnxissione 1 of@ Patents', Y i 1 Wshingtononcvv e carried by theframe2 and @a onrtain valso carriedby theframe 1n depending relationthereto -In' test 1nonyth at ciann fthe foregoingel asy my owny'havehereto aHiXed my signa.-A

ure in thepresenoe' of twdwtnesses.

Witnesses 1 Jos. Gr. KETTER', NVM. EARLHEBERLIN@ A JAMES nnIsHnBEGAn'

